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A084367 n*(2n+1)^2. 0
0, 9, 50, 147, 324, 605, 1014, 1575, 2312, 3249, 4410, 5819, 7500, 9477, 11774, 14415, 17424, 20825, 24642, 28899, 33620, 38829, 44550, 50807, 57624, 65025, 73034, 81675, 90972, 100949, 111630 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

a(n) = n*( n*(2n+1)+1 + n*(2n+1)+2 + ... + n*(2n+1)+2n )

FORMULA

a(n) = n*A000290(n); n*a(n) = A014105(n)^2

EXAMPLE

a(3) = 147 since 147 = 3*7^2

CROSSREFS

Sequence in context: A088064 A080812 A116169 * A006974 A171480 A007681

Adjacent sequences:  A084364 A084365 A084366 * A084368 A084369 A084370

KEYWORD

easy,nonn

AUTHOR

Charlie Marion (charliem(AT)bestweb.net), Jun 22 2003

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Last modified February 15 03:59 EST 2012. Contains 205694 sequences.